Loom harness



Juiy. l3 1926,

-G. L.. LUNDEN LOOM HARNESS s Sheets-Sheet 1 Filed May 19 I 1925 Juiy 1 ,1926, 1,592,033

G. L. LUNDIN LOOM HARNESS Filed May 19 I 1925 f '3 Sheds-Sheet 2 f July 13 51926. 1,592 033 G. L. LUND IN LOOM HARNESS Filed May 19 I 1925 S Sheets-Sheet 3 Patented July 13, 1925.

warren stares GUSTAF L. LUITD I, C'F 13E?! BE'DlSGED, MASSACHUSETTS, ASSIGNOR TO NASHAWENA MILLS, 6F NE; BEBFORD, IVIASSACEIUSETTEE, A CORPORATION OF MASSACEUSETTS.

LOOM Hanan-ass.

Application filed May 19, 1925. Serial No. 31,307,

he present invention relates to an improvement in loom harnesses, and more particularly to harnesses for doup weaving.

The object of the invention is to produce an improved doup harness, and to this end he invention consists in the harness hereinafter described and particularly defined in the claims.

In the accompanying drawings illustrating the preferred form of the invention, Fig. l isian elevation showing a standard harness provided with a liecldle,and a doup harness provided with a doup, one heddle and doup only being shown for the sake of clearness; Fig. 2 a section taken on the line 2-2, Fig. 1; Figs. 3, a and 5 illustrate relative positions of the crossing harnesses; and Figs. 6 and 7 illustrate a modified form of theinvention.

lhe illustrated embodiment of the invention is described as follows: The standard harness has the usual frame 1 and shafts 2 for the heddles. These heddles are made of wire, and the eye 3is formed in the usual manner except that it occupies an inclined position, as shown in. Fig. 1. Above the standard eye 3 is the long doup eye l, formed in the same heddle for a purpose presently to be described. The doup harness 5 is provided with a bottom shaft 6, whi h carries the link 7. To the upper end of this link is attached the doup or doup needle ,8. The. doup consists of a wire bent upon itself and more or less stiff and self supporting, and having its two ends threaded over the link 7. The doup S is threaded through tiie standard heddle by extending one leg through the doup eye e, andtheuce down through the standard eye 3, after which both attaching loops 9 in the ends of the doup needle are threaded over the leg 10 of the link; after this the link is sprung over the shaft 6. It will be observed that the one leg 10 of the link 7 is a straight leg, and that the other leg 11 is provided with a hook 12 at its end, which is adapted to engage the under side of the doup shaft 6.

in the drawings the crossing threads are indicated by the reference characters 13 and LL, and the doup thread is indicated by the reference character 15.

It is to be observed that the top and bottom loops of the standard heddle which embrace the shafts 2 of the standard harness determine the position of the heddle in the harness and that the doup eye lies in the same plane asflthe top and bottom'loopsof the heddle. The standard eye lies in a plane inclined sidewise to the plane of the doup eye. This construction supports the standard heddle in such a position that the doup freely moves through the doup eye and standard eye, andthe loop formed between the upper side of the standard eye and the upper end of the doup (see Fig. 1) lies in a plane transverse to the loom so that the doup thread may move freely and any bends in the doup thread are avoided. It is also to be observed that the loop in the upper end of the doup which embraces the doup thread lies in the same plane as the loops 9 at the ends of the doup wire so that the upper of the doup wire normally occupies a position generally transverse to the warps.

l-leretofore the doup eye of a standard heddle has been a short eye, and in the operation of the loom it has sometimes occurred that the doup would strike the upper end of the doup eye, thereby straining the parts and tending to push the doup harness out of place, as well as to interfere with the movements of the parts. One feature of the invention consist in the employment of a doup eye of such length that irrespective of the relative movements of the standdard and doup harnesses, the doups will never strike the top of the doup eye.

In former practice the standard eye has lain in the plane of the wires of which it was formed. This caused the bending of the doup in the operation of the loom. and added difliculties in weaving, and increased the wear of the parts. ldoreover, the eye formed by the doup where it projects t irough the standard eye had a very tapering bottom, which caused it to pinch the doup thread. In the present construction the bottom of this eye for the doup thread is much less liable to pinch the doup thread.

The' oonnection of the doup to the doup harness by means of a lost motion link is another feature of advantage in this construction, inasmuch as it permits the relative movement of the doup harness and doup. Thus referring to Fig. 3, we see the parts in the position .in which they are shown in Fig. 2, with the doup shaft 6 at the bottom of the link 7. In the next position shown in Fig. 4-, the standard is lowered and the doups drop. the link sliding down on the doup shaft 6. and permittingnon-interference ot' the doup with the crossing threads. In Fig. the doup thread shown in lowered position, and the link 7 as resting on the shaft (3. The capacity of the doup to adjust itself by reason of this lost mot-ion connection with the doup harness contributes materially to the good operation of the 1I16'L'l1ttnismby avoiding the interference of the doups with each other and reducing the upward motion of the doup when not lifted by the doup thread or end while still maintaining the same vertical movement of the doup harness itself.

In Figs. 6 and 7 the standard 16 and the doup 17 are both made of thin resilient sheet metal. conveniently of the sort that steel heddles and drops are made of. The link 18 is also made of a sheet metal stamping. The ends of the doup are slitted and nest toget-her as shown. The standard eyes 19 and the doup eye 20 afi'ord large clearances atfording free relative movements of the parts. This form of the invention connnends itself by reason of the compactness with which elements may be assembled.

Having thus described the invention, what is claimed is 1. A harness for doup weaving compris ing a standard having a heddle provided with an inclined eye and a long doup eye above it, a doup harness, a doup passing through the doup eve and standard eye and a lost motion connection between the doup and the doup harness.

A harness for doup weaving having, in combination, a standard having a heddle provided with a standard eye and a doup eye, a doup harness having a doup passing through the doup eye and the standard eye, and a doup link for connecting the doup to the doup harness having provision for permitting lost motion between the (ion p and its harness.

A harness for doup weaving having in combination, a standard provided with a heddle having a standard eye and a doup eyea doup harness, a doup passing through the doup eve and standard eye, the doup being provided with fastening loops at its ends, a doup link consisting of an elongated member passed through the loops in the ends of the doup and embracing a portion of the doup harness, said link being open at one point for application to and removal from the doup harness.

l. A harness for use in doup weaving having, in combination, a standard provided with a heddle having a standard eye and a doup eye, a doup harness a sell Sil])])()liing doup passing through the doup eve and standard eye of the standard. and having lost motion connection with the doup harness.

In testimony whereof I have signed in name to this specification.

GUSTAF L. LUXD'IX. 

